native/ImageHashManager.h

/*
 * Copyright 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <android/hardware_buffer.h>
#include <array>
#include <string>

namespace android {

class ImageHashManager {
public:
    static int32_t generateWaveletHash(uint8_t* buf, int32_t width, int32_t height,
                                       std::array<uint8_t, 8>* outImageHash);

    static int32_t generateHash(std::string hashAlgorithm, uint8_t* buf,
                                AHardwareBuffer_Desc bufferDesc, int32_t bytesPerPixel,
                                int32_t bytesPerStride, std::array<uint8_t, 8>* outImageHash);
};

} // namespace android